Oilfield downhole fishing device

Abstract

The invention provides an oilfield downhole fishing device which comprises a fishing device body, an anchor rod arranged on the fishing device body, a connector arranged on the fishing device body, a fishing head arranged on the fishing device body, a circular slip arranged on the fishing device body and a scraping claw arranged on the fishing device body. The fishing head is provided with a guide cone, the connector is installed on the anchor rod, a lifting ring is arranged on the connector, a clamping groove is formed in the fishing device body, the scraping claw is installed in the clamping groove and connected with a first spring, the first spring abuts against the fishing device body, and a second spring is arranged at the connecting position of the circular slip and the fishing device body. The oilfield downhole fishing device is simple in structure, convenient to use and install, simple to operate, low in cost, high in tensile load, high in impact resistance load, high in operating success rate, high in applicability, wide in application range, long in service life, safe and reliable.

Description

technical field [0001] The invention relates to an oilfield downhole fishing device. Background technique [0002] At present, in the production of downhole operations in oil fields, it is common for tubing, packers, etc. to fall into the well, requiring professional fishing tools for fishing. In ordinary accidents, the commonly used fishing equipment is roughly divided into The four-grab overhauler for fishing deep well sucker rods, the mechanical oscillator for fishing deep well drill pipes, the new cutting knife for cutting tubular fallen fish, and the flow-through overshot device that can collect large pieces of rock debris and metal, and the falling objects during the fishing process It cannot be salvaged, cannot be withdrawn, increases the difficulty of workover operations, and increases maintenance costs, and the prior art is very inconvenient to install and disassemble, and is time-consuming and laborious. Contents of the invention [0003] The technical problem t...

AI Technical Summary

Problems solved by technology

[0002] At present, in the production of downhole operations in oil fields, it is common for tubing, packers, etc. to fall into the well, requiring professional fishing tools for fishing. In ordinary accidents, the commonly used fishing equipment is roughly divided into The four-grab overhauler for fishing deep well sucker rods, the mechanical oscillator for fishing deep well drill pipes, the new cutting knife for cutting tubular fallen fish, and the flow-through overshot device that can collect large pieces of rock debris and metal, and the falling objects during the fishing process It cannot be salvaged and withdrawn, which increases the difficulty of workover and maintenance costs, and the installation and disassembly of the existing technology is very inconvenient, time-consuming and labor-intensive

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